BODS 4.x al_engine repository parameter files

Hi

Has anybody used repository parameter files with BODS 4.2?

We used them routinely with 3.2 but under 4.2 if I create a parameter file using the al_engine "-gr" option then when I attempt to use it, using the "-yr" option, then I get the error message

Could not parse the password file: d:/Program Files (x86)/SAP BusinessObjects/Data Services/conf/xxx.prm

Comparing the 3.2 and 4.2 parameter files it looks like the 4.2 has 32 bytes prepended to it compared to the 3.2 version.

I have tried using a passphrase in the creation and use of the parameter file but get same error.